Weighing scale



Aug. 21, 1923.

R. CRAiG l WEIGHING SCALE Filed May 7, 1921 4 Sheets-Sheet 2 Aug. '21, 1923.

R. CRAIG WEIGHING SCALE Filed May 7, 1921 4 Sheets-Sheet 5 Augzl, 1923. 'y 1,465,252

Fi CHQAIG WEIGHING SCALE Filed May '7. 1921 4 Sheets-Sheet 4 APatented Aug. 21, 1923.

UNITED STATES if RBEBT CRAIG, F DAYTON, OHIO, ASSIGNOR, BY lblllllll.` ASSIGNMENTS, TO COM- `PU"lflllll'G-'I'ALBULATINGREl'JORDIlCY CO., OF NEW YORK, N.- Y., A CORPORATION 0F ITO all 'who/m, t may cof/wem:

y1,465,252 PATENT ol-rlci-z.'I

`. l. JKEW YORK.

Application tiled May 7,

Be it known that I, ROBERT CRAIG, a citizen of the United States of America, residing at Dayton, in the county of Montgomery .and State of Ohio, have invented 'certain new and useful Improvements in TWeighing Scales, of which the following is a full, clear',

' and exact description.

. The present invention relates to improve;-

lments in weighing scales and more particularly to improvements in the weight indicating devices.

The objects of the present invention reside in the provision of means for impro-ving the weighty indicating devices to the end Athat more comprehensive readings of the n Weight ma l be secured.

Other 0 jects of the invention reside' in the provision of means for indicating `the rweight for certain load ranges b one scale of graduations and other ranges y another scale of graduation.

i Other ob'ects and advantages will be set forth in more detail in the accompanying drawing in which Fig. l shows a front view of one embodi- Fig. 2 1s a sectional view of the scale shown in Fig. 1 taken on line 2-2 of-Fig. 1.

Fig. 3 isan enlarged detail view of the indicating chart and shutter.

Fig. 4 is another sectional view ltaken on line 4-4 of Fig. l.

Fig. 5 is a detail showing the mechanism for shifting the'super capacity weight.

Fig. (i is a view of a different embodiment l of the invention. i Fig. 7 is a detail view of the chart and 4color filter. l

1 Figs. 8, 9, 10 and 11 are illustrative charts showing the uses to which the constructions may be employed when itis desired to secure `various indications of weight.

-The scale to which the present invention isshown as applied comprises certain parts `whichform the lsubject matter of a sepa- `rate application, Serial Numberl 439,334. `The present invention in its application is not generally limited tothe particular scale disclosed but is directed to e nevel arrangement of structure as will be more' particularly de- .ined by the ap ended claims.

11n general t e scale comprises a suitable housing l5 for the main parts of the mecha- WEIGHING SCALE.

1921. Serial No. 467,765.

beam 17 having connected thereto the usual drat rod 18 and having also connected thereto any suitable automatic count/erhalancing system such as the pendulum i9. A connection 2O is pivotally supported u on the beam and carries a-rack 2l which drives the indicating drum "22 in the 'usual manner.

For'loads'beyond thel normal range of the pendulum as shown by one revolution of the drum 22, the excess load may be oil.- set by capacity weights. A. lever 23 (Fig. l) acting through cams 24 and finger arms 25 selectively applies to one or moreof the three weights 26 (Fig. 2) to a knife edge carried by the scale beam. When still fur.- therload is to beoifset, a dog 27 is ,dis-

engaged from a handle 28 and the handle eol lowered thereby swinging down a supplementary ingerarm 29 and depositin one additional weight 30 upon the beam. Vigeight 130 will hereafter be termed a super capacity weight. This weight 30 when appliedv returns the drum to its starting position and each of the weights 26 when applied returns additional Weight 30 upon the beam. Weight I the drum housing there is provided a vshutter 31 having staggered window apertures therein. This shutter is interconnected to the capacity weight handle 23 by a linkBQ. The arrangement is such that the shutter selectively discloses to view different sections of the chart upon the drum. Upon swinging the handle 23 the shutter will be displaced so that one or the other of the apertures therein will align with the window opening in the drum housing and thereby selectively expose different portions of the chart to vView. Referring to Figs. 9 and l: if handle 23 is in zero or home position and none oi' the weights 26 are upon the beam, lsection A of the chart will be exposed. If one weight is applied B section rwill be employed, with two weights C section will be exposed, and with three` weights the D scction will be visible. The construction just described is more fully described in my copending application heretofore referred to.

When loads in excess of the amount which can be offset by the three capacity weights andthe pendulnms are to be weighed, Athe handle 23 is preferably first returned to to the beam. This super weight oi'sets the weight corresponding to the combined forces or" the three weights 26 and of the pendulum 19 when the latter has swung through its complete travel. ln consequence the drum 22 is returned to starting position and the neXtweight reading may again be taken from section The handle 23 may beagain manipulated when the chart is turned through complete revolution by 'the applied load to again selectively bring;l into view the sections B, C, l). rfhus so iar as offsetting the load is concerned the scale described readily takes care of loads eight times the amount oi' load handled by the pendulum system alone. rlhe indication oi all ot the load for the iirst four steps is directly displayed by the different sections oi` the chart. rll`hereatter, however7 there is a repetition of the display over the same sections of the chartand this necessitates a double set olf graduations which it' concurrently displayed would be confusing and. objectionable if not entirely Yimpossible to read.

To enable direct unconiused readings ot' the chart to be taken for both the tirst and second direct display o' the same chart 'section l print the first section of the chart in red characters as shown in black lines marked fr in Fig. 9. rlhe super section is printed in green characters which are shown in dotted lines marked g in Fig. 9.

To selectively render visible either the red or the green characters and to obscure the characters which are not to be read, I provide a supplementary pivoted shutter 33 within the housing and connect this shutter by a suitable link 3ft to the super weight mechanism. 'lhe shutterl 33 is provided with two color filter sections'colored red and green as shown at 35g and 35V and these iilter sections are so arranged that the green filter will be in position when the super weight is off thereby obscuring 'the green characters f/ and displayingr the red charactcrs in black. lWith the super weight on7 the red filter will be in position and the red characters r will be obscured and the green characters shown in black to the operator.

It will be understoodthat suitable illuminating devices such as the electric lamps 3G may be employed, likewise the usual lenses 37 and reading wires 38. yThese features being well known in the art require no detailed description.

The embodiment of the invention shown 4in Fig. 6 and 7 illustrates a simpler em bodiment ofthe invention. Here one capacity Weight 30 is employed. The chart comprises a. single section A and the color 'filter shutter 33 is interconnected through a link 39 with the capacity weight changing lever 40. No apertn'red shutter is employed. For the first revolution the red section ot meterse the chart is read through. the green tiltcr and upon the second repeat revolution the green section is read through the red filter.

It will be understood lthat a wide variety of chart arrangements may be used to se cure certain desired results. 8. l0 and ll illustrate certain applications of the super 4weight embodiment ot the invention and ttor-'simplicity in illustration these chart sections are shown only ii'or the first two chart sections A. and B. They could be extended as desired but it will be assumed that the scale. has a drum with a two section chart, a shutter 3l with two window apen tures and a suitable red and green color filter operated by the super weight device.

S shows a chart without any color graduations, total capacity 20.#s with ltlits capacity per section and with the weight tgraduations l/l apa-rt. Upon the application of a capacity weight the shutter changes the reading from column A to B. This is my previous construction and is here illustrated merely for convenience in explaining the improvements which follow.

Fig. l() shows a chart oi' a scale having the same total capacity as before but with O to 5 :,tl: graduations for the iirst section A in red, 5 to l0 :l gradual-tions 'for the B section in red, l0 to l5 .it on the A section in green and from 15 to 2() lbs. on the B section in green. Change from A to E sections is made by the capacity weight device and for the higher readings between l0 and 2O lbs. the super' weight is employed. In this embodiment the individual graduation lines are spaced 1/16 apart as before shown in Fig 8 butreaclt line represents a smaller division of weight. By using this chart the weight can be readily read to 1/32 of a pound without interpolating the chart. ln the former construction shown in TFig. 9 the limit of direct reading is l/lG of a pound. Ey this chart arrangement used in connection with my improved construction I am enabled to increase the number of raduations of a scale without increasing its capacity.

' Fig. il in general is the same as Fig.- l0 except that the l oz.v graduations are omitted and the resulting chart Pgives the same nurnber of intermediate gnailuations between the pound marks as in Fig 8 but with double the clear interval between each line. In this way I may provide a scale in which the clear interval between divisions is increased without increasing or diminish-ing their number.

It will be understood that in all of the embodiments of charts illustrated the fractional pound values and graduation lines may be printed either in black ink or they may be printed with a double impression ot' su erim osed and aligned red and green inis. Vigith either method of printing the result will be the same when read through a llo filter namely a black image will be displayed.

What I claim is:

1. In a weighing scale, in combination, a

scale beam, an indicator variably positioned thereby, said indicator having a plurality of sets of indicating characters, one set being in one color and the other in another color, a capacity Weight device adapted to deposit a Weight upon the scale beam, and a color filter device interacting therewith and adapted to change the visibility of the graduations from one set to the other upon the' changing of the capacity weight.

2. The invention set forth in claim 1 in which the color filter device is adapted to render one set of the colored characters invisible and the other set visible in a different color than that in which the set is printed.

3. In a. Weighing scale, yin which means is provided for changing the load oifsetting capacity of the scale by the application of capacity weight to a moving part thereof, in combination, an indicator adapted to indicate the offset load, said indicator having a plurality of sets of weight indications. each set having a particular color, and means including devices operated concurrently with the changes in the capacity Weight for changing the visibility of the sets of indications by varying the color characteristics of light rays.

' 4. In a. weighing scale in which means is provided for changing the load offsetting capacity of the scale by the application of capacity Weight to a moving part thereof, in combination, an indicator for the offset load', said indicator having a plurality of sets of indicators, one set being in one color and the other being in another color, a color filter device having colors similar to the colors of the indications, and means operating concurrently With the shifting of the capacity Weight device for shifting the color filter de vice in front of said indicator and thereby rendering one set of graduations visible and the other setinvisible.

5. In a weighing scale having an indicator provided With a plurality of Weight indicatl ing sections, each of said sections havinga double set of characters, one being in one color and the other in another color, means independent of the movement of the indicator for selectively displaying a particular section of the indicator, and means for obscuring from view one of the sets of colored characters and for displaying the other set.-

6. In a weighing scale having an indicator provided with a. plurality of indicating secations.v each section having a double set of characters one set being printed in one color and the other in another color, means independentof the movement of the indicator for selectively displaying .a particular section of the indicator, and means for rendering one ot' the colored sets of characters invisible and the other colored set visible in a diierent color from that in which said set is y v printed'. A

7. In a Weighing scale having in combination, a drum indicator provided with'a nlul i rality of indicating sections, a capacity weight changing device, a shutter operated thereby for obscuring certain sections and a Weight changing devicev for applying one or more capacity weights to said beam, a super capacity weight changing device for applying asuper capacity weight to said beam, and display changing devices operated conjointl by both the said weight changing devices or controlling the visibility of the indications.

9. In a lWeighing scale having, in combi?.

nation, a scale beam, an indicator, having different indicating sections and a double roup of characters in each section, a capac# ity weight changing device for applying `one or more capacity weights to the beam, a super capacity Weight changing device for applying a super capacity Weight to said beam, and displaying changing devices operated conjointly by both said Weight changing devices for controlling b'oth the visibil-- ity of the sections and of the groups of characters in a single section.

ltlf) 10. In a weighing scale, in combination, a

scale beam, a multi-section indicator there for, each section of said indicator having a double set of characters, means for applying one or more capacity Weights to said beam and for concurrently selectively displaying a corresponding section of the indicator, and means for applying an additional capacity weight to said beam and for concurrently selectively controlling the visibility of one or the other set of characters of said section.

l1. The invention set forth in claim l0 in which an apertured shutter is provided for changing the display of the indication from section to section and in which a color filter is provided for controlling the visibility of the sets ot characters. j

l2. In a Weighing scale having capacity weight devices, an indicator having a plurality of graduated indicating sections for diiferent load'ranges, a capacity Weight device for offsetting certain portions ot' the applied load, means controlled by said device for changing the display of the indication from section to section as the load range correllO Vieles@ Weigh indications in different co1o1s,'and means operated by seid capacity weight device for changingT the display of the indication by means of changeable color screens disposed in front thereof.

ln testimony whereof I hereto affix my signature.

ROBERT CRAIG.

Certiiezfiie of Correction.

It is hereov certified that in Letters Patent. No. 465 252. rented Auo'us 21 1923 .l 3 7 g l: 7 7

lipon'the aplolicaticn of Rober-t Craig, Velginng bendes,7

tionl as follows: Page' l, S-like out present line 83 and insel through (me revolution.

of Dayton, Ohio, for an impl-@vement in en error appears in ihe printed specification requlring correc- V/HLi/n.; and that the said Lett-ers Pzient should be read with" `this coii'ection therein hzit the saine may confom to the Iecord of the case in the Pa'rent Office. l

Signed and sealed his 9th de); o'fOctobei, A. D., 1923.

i [SEAL] WM. KINNAN, Acing @ammi-Sezione?" of Patents. 

